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Oxidative stress and antioxidant defenses in two green microalgae exposed to copper.
Ecotoxicol Environ Saf. 2009 May; 72(4):1200-6.EE

Abstract

The aim of this work was to assess the effects of 1 week copper exposure (6.2, 108, 210 and 414microM) on Scenedesmus vacuolatus and Chlorella kessleri. The strains showed different susceptibility to copper. Copper content was determined in both strains by total X-ray reflection fluorescence analysis (TXRF). In S. vacuolatus, the increase of medium copper concentration induced an augmentation of protein and MDA content, and a significant decrease in the chlorophyll a/chlorophyll b ratio. S. vacuolatus showed a significant increase of catalase activity in 210 and 414microM of copper, and a significant increment of SOD activity and GSH content only in 414microM of copper. On the contrary, C. kessleri did not show significant differences in these parameters between 6.2 and 108microM of copper. Increased copper in the environment evokes oxidative stress and an increase in the antioxidant defenses of S. vacuolatus.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Sabatini SE
Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pab. II, Ciudad Universitaria, Ciudad Autónoma de Buenos Aires, CP 1428, Buenos Aires, Argentina. sabatini@bg.fcen.uba.ar
Juárez AB
No affiliation info available
Eppis MR
No affiliation info available
Bianchi L
No affiliation info available
Luquet CM
No affiliation info available
Ríos de Molina Mdel C
No affiliation info available

MeSH

Algal ProteinsAntioxidantsCatalaseChelating AgentsChlorellaChlorophyllCopperEdetic AcidGlutathioneLipid PeroxidationMalondialdehydeModels, StatisticalOxidation-ReductionOxidative StressScenedesmusSpectrometry, X-Ray EmissionSuperoxide Dismutase

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19223073

Citation

Sabatini, Sebastián E., et al. "Oxidative Stress and Antioxidant Defenses in Two Green Microalgae Exposed to Copper." Ecotoxicology and Environmental Safety, vol. 72, no. 4, 2009, pp. 1200-6.
Sabatini SE, Juárez AB, Eppis MR, et al. Oxidative stress and antioxidant defenses in two green microalgae exposed to copper. Ecotoxicol Environ Saf. 2009;72(4):1200-6.
Sabatini, S. E., Juárez, A. B., Eppis, M. R., Bianchi, L., Luquet, C. M., & Ríos de Molina, M. d. e. l. . C. (2009). Oxidative stress and antioxidant defenses in two green microalgae exposed to copper. Ecotoxicology and Environmental Safety, 72(4), 1200-6. https://doi.org/10.1016/j.ecoenv.2009.01.003
Sabatini SE, et al. Oxidative Stress and Antioxidant Defenses in Two Green Microalgae Exposed to Copper. Ecotoxicol Environ Saf. 2009;72(4):1200-6. PubMed PMID: 19223073.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Oxidative stress and antioxidant defenses in two green microalgae exposed to copper. AU - Sabatini,Sebastián E, AU - Juárez,Angela B, AU - Eppis,Maria R, AU - Bianchi,Laura, AU - Luquet,Carlos M, AU - Ríos de Molina,María del Carmen, Y1 - 2009/02/14/ PY - 2008/09/18/received PY - 2008/12/22/revised PY - 2009/01/10/accepted PY - 2009/2/19/entrez PY - 2009/2/19/pubmed PY - 2009/6/17/medline SP - 1200 EP - 6 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 72 IS - 4 N2 - The aim of this work was to assess the effects of 1 week copper exposure (6.2, 108, 210 and 414microM) on Scenedesmus vacuolatus and Chlorella kessleri. The strains showed different susceptibility to copper. Copper content was determined in both strains by total X-ray reflection fluorescence analysis (TXRF). In S. vacuolatus, the increase of medium copper concentration induced an augmentation of protein and MDA content, and a significant decrease in the chlorophyll a/chlorophyll b ratio. S. vacuolatus showed a significant increase of catalase activity in 210 and 414microM of copper, and a significant increment of SOD activity and GSH content only in 414microM of copper. On the contrary, C. kessleri did not show significant differences in these parameters between 6.2 and 108microM of copper. Increased copper in the environment evokes oxidative stress and an increase in the antioxidant defenses of S. vacuolatus. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/19223073/Oxidative_stress_and_antioxidant_defenses_in_two_green_microalgae_exposed_to_copper_ DB - PRIME DP - Unbound Medicine ER -